8485807129 has 2 divisors, whose sum is σ = 8485807130. Its totient is φ = 8485807128.

The previous prime is 8485807123. The next prime is 8485807229. The reversal of 8485807129 is 9217085848.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7335579904 + 1150227225 = 85648^2 + 33915^2 .

It is a cyclic number.

It is not a de Polignac number, because 8485807129 - 2²⁷ = 8351589401 is a prime.

It is not a weakly prime, because it can be changed into another prime (8485807123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4242903564 + 4242903565.

It is an arithmetic number, because the mean of its divisors is an integer number (4242903565).

Almost surely, 2^8485807129 is an apocalyptic number.

It is an amenable number.

8485807129 is a deficient number, since it is larger than the sum of its proper divisors (1).

8485807129 is an equidigital number, since it uses as much as digits as its factorization.

8485807129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1290240, while the sum is 52.

The square root of 8485807129 is about 92118.4407651367. The cubic root of 8485807129 is about 2039.6910278732.

The spelling of 8485807129 in words is "eight billion, four hundred eighty-five million, eight hundred seven thousand, one hundred twenty-nine".